Information sharing system and information sharing method

ABSTRACT

An information sharing system includes: a post reception unit configured to receive a post from a user; a display control unit configured to display a thumbnail indicating the post at a terminal device of the user for each received post; and a vote reception unit configured to receive a vote from the user to the post, and the display control unit changes a display aspect of the thumbnail according to a number of the votes received by the vote reception unit regarding the corresponding post, for each thumbnail.

INCORPORATION BY REFERENCE

The present application claims priority under 35 U.S.C. § 119 toJapanese Patent Application No. 2020-127312 filed on Jul. 28, 2020. Thecontent of the application is incorporated herein by reference in itsentirety.

BACKGROUND OF THE INVENTION Field of the Invention

The present invention relates to an information sharing system capableof sharing various kinds of information such as music content includedin a post from a user among a plurality of users.

Description of the Related Art

When a plurality of persons such as friends arrange to go on a travel orthe like, preparations such as presenting candidates of a destination orthe like among friends and extracting a destination desired by manypeople or the like are needed beforehand.

Conventionally, a system is known which receives posts from a pluralityof users and displays them at a terminal device, receives evaluationsfrom the users for each post as a vote to the post, and superimposes anddisplays the number of affirmative votes for example on display of thepost (for example, Japanese Patent Laid-Open No. 2020-095721 andJapanese Patent Laid-Open No. 2020-071861).

However, in the conventional technology, a result of votes of the otherusers to the post from the user is just superimposed and displayed onthe display of the post as a numerical value at the terminal device.Therefore, in the conventional technology, in order to recognize apreference trend as the entire users, the numerical values of the votesto the respective posts need to be individually compared.

The present invention is implemented in consideration of the backgrounddescribed above, and is to easily recognize the preference trend as theentire users in an information sharing system capable of sharinginformation of a post or the like from a user among a plurality ofusers.

SUMMARY OF THE INVENTION

One aspect of the present invention is an information sharing systemincluding: a post reception unit configured to receive a post from auser; a display control unit configured to display a thumbnailindicating the post at a terminal device of the user for each receivedpost; and a vote reception unit configured to receive a vote from theuser to the post, and the display control unit changes a display aspectof the thumbnail according to a number of the votes received by the votereception unit regarding the corresponding post, for each thumbnail.

According to another aspect of the present invention, the displaycontrol unit changes a size of the thumbnail according to the number ofthe votes as the display aspect.

According to another aspect of the present invention, content of thepost includes music, moving images, places or photographs.

According to another aspect of the present invention, the informationsharing system includes a thread generation unit configured to generatea thread which is a virtual storage space to preserve the post from theuser belonging to a user group, for each user group, the post receptionunit receives the post to the thread from the user and preserves thepost in the thread, and the display control unit displays the thumbnailof the post preserved in the thread only at the terminal device of theuser belonging to the user group corresponding to the thread.

According to another aspect of the present invention, the informationsharing system includes: a joining request reception unit configured toreceive a joining request regarding synchronous output of content of thepost from the user within the user group for each thread; and a contentreproduction unit configured to output the content of the post preservedin the thread to the terminal device of the user within the user group,and the content reproduction unit synchronously outputs, based on areproduction operation regarding the content in the terminal device ofany user from whom the joining request is received, the content which isan object of the reproduction operation, in the terminal devices of allthe users from whom the joining request is received.

According to another aspect of the present invention, the terminaldevice of the user from whom the joining request is not received by thejoining request reception unit performs the reproduction operation ofthe content included in the post independent of the terminal devices ofthe other users.

Another aspect of the present invention is an information sharing methodincluding: a step of receiving a post from a user; a step of displayinga thumbnail indicating the post at a terminal device of the user foreach received post; and a step of receiving a vote from the user to thepost, and a display aspect of the thumbnail is changed according to anumber of the votes received regarding the corresponding post, for eachthumbnail, in the displaying step.

According to the aspects of the present invention, while sharinginformation of a post from a user among a plurality of users, apreference trend as the entire users can be easily recognized.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a diagram illustrating an example of a configuration of aninformation sharing system relating to one embodiment of the presentinvention;

FIG. 2 is a diagram illustrating an example of a scene where asynchronous reproduction function of the information sharing system ofthe present invention is utilized;

FIG. 3 is a diagram illustrating an example of a thread list screen, ina terminal device configuring the information sharing system illustratedin FIG. 1;

FIG. 4 is a diagram illustrating an example of an invited user selectionscreen when creating a thread, in the terminal device configuring theinformation sharing system illustrated in FIG. 1;

FIG. 5 is a diagram illustrating an example of a thread setting screen,in the terminal device configuring the information sharing systemillustrated in FIG. 1;

FIG. 6 is a diagram illustrating another example of the thread listscreen, in the terminal device configuring the information sharingsystem illustrated in FIG. 1;

FIG. 7 is a diagram illustrating an example of an invitation receptionnotice screen when invitation mail to a thread is received, in theterminal device configuring the information sharing system illustratedin FIG. 1;

FIG. 8 is a diagram illustrating an example of a spot post screen, inthe terminal device configuring the information sharing systemillustrated in FIG. 1;

FIG. 9 is a diagram illustrating an example of an AV post screen, in theterminal device configuring the information sharing system illustratedin FIG. 1;

FIG. 10 is a diagram illustrating an example of a screen whenreproducing AV content, in the terminal device configuring theinformation sharing system illustrated in FIG. 1;

FIG. 11 is a diagram illustrating an example of a photograph postscreen, in the terminal device configuring the information sharingsystem illustrated in FIG. 1;

FIG. 12 is a diagram illustrating an example of a joining mode settingscreen for a synchronous reproduction operation, in the terminal deviceconfiguring the information sharing system illustrated in FIG. 1;

FIG. 13 is a diagram illustrating an example of an AV post screen at thetime of the synchronous reproduction operation, of the terminal deviceconfiguring the information sharing system illustrated in FIG. 1;

FIG. 14 is a diagram illustrating an example of screen display whencontent reproduction of music or the like is started, on the AV postscreen at the time of the synchronous reproduction operation illustratedin FIG. 13;

FIG. 15 is a diagram illustrating an example of the configuration of aninformation management server configuring the information sharing systemillustrated in FIG. 1;

FIG. 16 is a diagram illustrating an example of the configuration of theterminal device configuring the information sharing system illustratedin FIG. 1;

FIG. 17 is a diagram illustrating an example of the configuration of avehicle cooperating with the information sharing system illustrated inFIG. 1;

FIG. 18 is a flowchart illustrating a procedure of post displayprocessing of the information sharing system illustrated in FIG. 1; and

FIG. 19 is a flowchart illustrating a procedure of synchronousreproduction processing of the information sharing system illustrated inFIG. 1.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Hereinafter, one embodiment of the present invention will be describedwith reference to the drawings. FIG. 1 is a diagram illustrating aconfiguration of an information sharing system relating to oneembodiment of the present invention. An information sharing system 100relating to the present embodiment is configured by an informationmanagement server 102, and terminal devices 110 a, 110 b, 110 c, 110 d,110 e, 110 f, 110 g, 110 h, 110 i, 110 j, 110 k and 110 m (genericallyreferred to also as terminal devices 110, hereinafter) of users 130 a,130 b, 130 c, 130 d, 130 e, 130 f, 130 g, 130 h, 130 i, 130 j, 130 k and130 m (generically referred to also as users 130, hereinafter)communicably connected with the information management server 102 via acommunication network 104.

Each of the users 130 is a user (registered user) registered beforehandfor the information sharing system 100. It is assumed thatidentification information (user identification information) such as auser ID of the user 130 who is a registered user and access informationand a mail address for communicating with the terminal device 110 of theuser 130 are transmitted beforehand from the terminal device 110 to theinformation management server 102 by the user 130, and stored as userregistration information in a storage device of the informationmanagement server 102, for example.

The terminal device 110 is a portable terminal such as a smartphone, inthe present embodiment. However, the terminal device 110 is not limitedto the portable terminal, and may be an arbitrary terminal devicecapable of receiving and visually and/or acoustically outputtinginformation, such as a portable PC, a desktop PC and/or a notebook PC.The user 130 can join the information sharing system 100 and utilize itby executing an exclusive application program (joining application,hereinafter) for the information sharing system 100 for example, inhis/her own terminal device 110. Hereinafter, it is assumed that thejoining application is executed and the terminal device 110 configures apart of the information sharing system 100.

As described later, the terminal device 110 includes a display device1612 (display) provided with a touch panel 1614, and the user 130 caninput an instruction and/or information to the terminal device 110 viathe touch panel 1614 by a touch operation to a display screen or thelike.

The information management server 102 generates a thread which is avirtual storage space to preserve posts from the users 130, by receivinga thread creation request from the terminal device 110 of one of theusers 130. Here, the user 130 who transmits the thread creation requestto the information management server 102 by the terminal device 110 caninclude specifying of users to be invited to perform posting to thethread to be created.

The thread is disclosed only to a user group of joined users configuredby the user 130 who is the creator and the other users 130 who have beeninvited to the thread and accepted to join, and only the posts from therespective users 130 within the user group are preserved in the thread.

In order to simplify explanation, in FIG. 1, it is assumed that the user130 a transmits the thread creation request to the informationmanagement server 102 through the terminal device 110 a, and invitesnine users that are the users 130 b, 130 c, 130 d, 130 e, 130 f, 130 g,130 h, 130 i and 130 j to the thread.

When a joining program is executed in the terminal device 110, a threadlist screen as illustrated in FIG. 3 for example is displayed at adisplay device of the terminal device 110. In FIG. 3, a display screenof the display device 1612 of the terminal device 110 is configured by atitle display section 300 and a main display section 302 (an illustratedbroken line rectangular range). Characters of “THREAD” are displayed inthe title display section 300, and in the main display section 302below, the threads that the user 130 has joined (possibly including thethread created by the user 130 and the thread the user 130 has beeninvited to by the other user 130 and joined) are displayed in athumbnail format. A thread box 310 a illustrated in FIG. 3 is a displaybox where a thumbnail indicating the thread is displayed, andcorresponds to one thread that the user 130 has joined. The terminaldevice 110 illustrated in FIG. 3 is the terminal device 110 a owned bythe user 130 a for example, and a thread name “Chichibu BBQ” of thethread that the user 130 a has joined, and the thumbnail of arepresentative image indicating an image of Chichibu BBQ are displayedin the thread box 310 a.

The user 130 can create a new thread by touching an addition button 306.For example, when the user 130 touches the addition button 306, aninvited user selection screen for creating a new thread as illustratedin FIG. 4 is displayed at the terminal device 110. In FIG. 4, thecharacters of “<NEW THREAD” and “INVITED USER SELECTION” are displayedin the title display section 300, and it is indicated that the screen isthe invited user selection screen for creating a new thread. By thescreen, the user 130 is urged to select members (invited users) to beinvited to perform posting to the thread to be created hereafter.

In the main display section 302, a user invitation box 400 for selectingthe users (invited users) to be invited is displayed. In the userinvitation box 400, a list of person names (or nicknames) to becandidates of the invited users is displayed, for example. By touchingand checking off a check box provided on a right side of each personname, the user 130 can select a person of the checked person name as theinvited user. Here, the person names to be the candidates of the invitedusers may be acquired from an address book stored in the terminal device110. Note that a V-shaped symbol below the list indicates that the otherperson names continue below. The user 130 can move the list in a lowerdirection by swiping a display part of the user invitation box 400 andchecks a desired person name, for example.

After the invited users are selected, when the user 130 touches a textsection 402 where “NEXT” is displayed in the title display section 300,the terminal device 110 displays a new thread setting screen illustratedin FIG. 5. In FIG. 5, the characters of “<NEW THREAD” and “THREADSETTING” are displayed in the title display section 300, and it isindicated that the screen is the new thread setting screen. Below thetitle display section 300, a thread setting box 500 is displayed. At anupper part of the thread setting box 500, a representative image section502 to display a representative image indicating an image of the threadunder creation and a thread name input section 504 to input a name(thread name) of the thread are displayed.

In addition, below the representative image section 502 and the threadname input section 504 in the thread setting box 500, an invited userlist 506 in which the invited users selected on the new thread creationscreen in FIG. 4 are listed is indicated. Hereinafter, for theexplanation, it is assumed that nine persons from “K. Yamada” to “G.Morimoto” listed in the invited user list 506 are the users 130 b, 130c, 130 d, 130 e, 130 f, 130 g, 130 h, 130 i and 130 j illustrated inFIG. 1 respectively, for example.

When the user 130 touches the representative image section 502,according to prior art, a list of images preserved in the terminaldevice 110 is popup-displayed on the display screen (not illustrated),and the user 130 can select a desired image from the displayed imagelist as a thread representative image. Thus, the selected image isdisplayed in the representative image section 502.

Further, the user 130 can input the thread name to the thread name inputsection 504 by a software keyboard 508 displayed at a screen lower partillustrated in FIG. 5. In FIG. 5, “spring drive” is inputted partway asthe thread name.

When the user 130 inputs the thread name and touches a text section 510where “SETTING” is displayed in the title display section 300, theterminal device 110 transmits the thread creation request including thethread name, the representative image and mail addresses of the selectedinvited users to the information management server 102. Here, the mailaddresses of the invited users may be acquired from the address bookstored in the terminal device 110, for example.

The information management server 102 which receives the thread creationrequest secures a thread storage area which is a storage area forpreserving the posts to the thread inside a storage device of theinformation management server 102, and stores thread information, ajoined user list, invited user information, and a synchronous joineduser list in the thread storage area as thread attribute information.Thus, the thread according to the thread creation request is created.For example, one thread corresponds to one thread storage area, andtherefore the thread storage areas for the same number as the number ofcreated threads are secured in the storage device.

Here, the thread information includes the thread name and therepresentative image of the thread. In addition, the joined user listincludes user identification information of the user 130 who is thecreator of the thread. Further, the invited user information includesthe user identification information of the respective users 130 who arethe selected invited users. Here, the information management server 102can specify the user identification information of the thread creatorand the invited users by referring to the user registration informationbased on the access information of the terminal device 110 which is atransmission source and the mail addresses of the invited users attachedto the thread creation request. The synchronous joined user list is usedat the time of a synchronous reproduction operation to be describedlater, and is an empty list as default.

Then, the information management server 102 refers to the threadattribute information of all the thread storage areas, and transmitsjoined thread information including the thread names and therepresentative images of all the threads that the user 130 who hastransmitted the thread creation request has joined, to the terminaldevice 110 which is the transmission source of the thread creationrequest. In addition, the information management server 102 transmitsinvitation mail for the created thread to the terminal devices 110 ofthe respective invited users, based on the respective mail addresses ofthe users 130 who are the invited users. In the above-described example,the information management server 102 transmits the invitation mail tothe terminal devices 110 b, 110 c, 110 d, 110 e, 110 f, 110 g, 110 h,110 i and 110 j of the respective invited users, based on the respectivemail addresses of the users 130 b, 130 c, 130 d, 130 e, 130 f, 130 g,130 h, 130 i and 130 j who are the invited users.

In addition, the terminal device 110 of the user 130 who has created thethread displays the thread list screen and displays all the threads thatthe user 130 has joined on the display device 1612, in response toreception of the joined thread information from the informationmanagement server 102. Thus, at the terminal device 110, the thread listscreen as illustrated in FIG. 6 is displayed. On the thread list screenin FIG. 6, a new thread box 310 b indicating the created thread of“spring drive” described above is added to the thread list screenillustrated in FIG. 3. (boxes that display threads like the thread boxes310 a and 310 b are generically referred to also as thread boxes 310,hereinafter).

On the other hand, at the terminal devices 110 of the invited users whoreceive the invitation mail from the information management server 102,such as the terminal device 110 b of the user 130 b, an invitationreception notice screen as illustrated in FIG. 7 is displayed. In FIG.7, text of “<INVITATION RECEPTION NOTICE” is displayed in the titledisplay section 300, and in an invitation display box 700 below, textsections 702 and 704 of “JOIN” and “DECLINE” are displayed following amessage of “Invitation to thread “spring drive” is received from Mr./Ms.D. Nishimoto. Join?”. Here, “D. Nishimoto” is the person name thatspecifies the user 130 (the user 130 a in the above-described example)who has created the “spring drive” thread.

The user 130 who receives the invitation mail, such as the user 130 b,touches the text section 702 of “JOIN” in the case of accepting joiningthe “spring drive” thread and performing posting, on the screen in FIG.7 which is displayed at his/her own terminal device 110 b. On the otherhand, in the case of not joining the “spring drive” thread (notperforming posting), the user 130 b touches the text section 704 of“DECLINE”.

Depending on which of the text section 702 of “JOIN” and the textsection 704 of “DECLINE” is touched, the terminal device 110 transmits ajoining response and a declining response respectively to theinformation management server 102. When the joining response is receivedfrom the terminal device 110, the information management server 102moves the user identification information of the user 130 in the inviteduser information preserved in the thread attribute information stored inthe thread storage area corresponding to the “spring drive” thread tothe joined user list preserved in the same thread attributedinformation. On the other hand, when the declining response is receivedfrom the terminal device 110, the information management server 102deletes the user identification information of the user 130 in theinvited user information.

When the joining response or the declining response is received from theterminal devices 110 of the users 130 who are all the invited users, theinvited user information becomes empty, and the user identificationinformation of all the users 130 who have joined the thread is includedin the joined user list. Hereinafter, the users who have joined thethread are also referred to as the joined users of the thread.Specifically, the joined users are configured by the user 130 who hascreated the thread and the users 130 who have been invited to the threadand returned the joining response.

Here, in the example of the “spring drive” thread described above, forexample, it is assumed that, of nine users 130 b, 130 c, 130 d, 130 e,130 f, 130 g, 130 h, 130 i and 130 j who are the invited users, eightusers 130 b, 130 c, 130 d, 130 e, 130 f, 130 g, 130 h and 130 i havereturned the joining response and the user 130 j has returned thedeclining response. Thus, the joined users of the “spring drive” threadare nine persons that are the user 130 a who has created the thread andthe users 130 b, 130 c, 130 d, 130 e, 130 f, 130 g, 130 h and 130 i whohave returned the joining response. The respective joined users canperform posting to the “spring drive” thread by their own terminaldevices 110 a, 110 b, 110 c, 110 d, 110 e, 110 f, 110 g, 110 h and 110i.

Next, with the post to the “spring drive” thread as an example, the postto the thread by the terminal device 110 and display of the post in theterminal device 110 will be described.

In the case of performing posting to the “spring drive” thread, the user130 who is the joined user of the “spring drive” thread first executesthe joining application in the terminal device 110 and displays thethread list screen. For example, the terminal device 110 requests thejoined thread information to the information management server 102according to execution of the joining application, acquires it, anddisplays the thread list screen as illustrated in FIG. 6 based on theacquired joined thread information.

In FIG. 6, when the user 130 touches the thread box 310 b of the “springdrive” thread, for example, a post screen as illustrated in FIG. 8 isdisplayed. In FIG. 8, in the title display section 300, in addition tothe text “<SPRING DRIVE”, category selection buttons 800, 802 and 804are displayed.

An icon symbolizing a spot flag is displayed on the category selectionbutton 800, and the category selection button 800 is used when selectinga spot post screen for a post regarding a POI (a place or a spot ofinterest, Position Of Interest) such as a tourist spot. In addition,icons indicating a musical note and a photograph are respectivelydisplayed on the category selection buttons 802 and 804, and thecategory selection buttons 802 and 804 are used when selecting an AVpost screen for posting music or the like (including music and movingimages) and a photograph post screen for posting photographs,respectively.

When displaying the spot post screen, the AV post screen and thephotograph post screen, the terminal device 110 acquires post listinformation listing all the posts preserved in the thread storage areaof the corresponding thread from the information management server 102,and displays the spot post screen, the AV post screen and the photographpost screen based on the acquired post list information. The post listinformation includes information of content and a category (distinctionof a spot, AV or a photograph) of each post.

In FIG. 8, for example, the spot post screen as an initial spot screento be shifted to from the thread list screen in FIG. 6 is illustrated.On the screen in FIG. 8, by emphatically displaying the categoryselection button 800 on which the spot flag icon is displayed with highluminance compared to the category selection buttons 802 and 804 drawnwith shadows, it is indicated that the screen is the spot post screen.

In FIG. 8, five posts regarding the POI already submitted to the “springdrive” thread are indicated at a lower part of the title display section300 in the thumbnail format. Specifically, in spot post boxes 810 a, 810b, 810 c, 810 d and 810 e (generically referred to also as spot postboxes 810, hereinafter) indicating each of the five posted POIs, athumbnail indicating each POI is displayed. A line drawing indicatingthe thumbnail is drawn only in the spot post box 810 a in FIG. 8 inorder to simplify the diagram and facilitate understanding, however, itshould be understood that the thumbnail is also displayed respectivelyin the other spot post boxes 810.

The user 130 can post a desired POI to the “spring drive” thread bytouching an addition button 830 at a screen lower part illustrated inFIG. 8. The post of the POI may include POI information configured by aname of the POI (for example, a spot name or a common name such as“Kumagaya sakuratsutsumi”), position information (latitude/longitude orthe like) and a photograph image of the spot or the like, according tothe prior art. For example, the user 130 can post the POI by inputtingthe above-described POI information to a popup box (not illustrated)displayed by touching the addition button 830, according to the priorart. Or, the user 130 can post information regarding the spot searchedby a map application such as Google Map® to the “spring drive” thread asthe POI information via a sharing function provided by an OS (operatingsystem) or the like of the terminal device 110 for example.

By touching one of the displayed spot post boxes 810, the user 130 candisplay the POI information indicated by the post corresponding to thespot post box 810 on the screen of the terminal device 110 (notillustrated). The display of the POI information can be configured bythe image of the map indicating the position of the POI and thephotograph image of the spot, for example.

In the respective spot post boxes 810 displayed by the post of the POI,the name (indicated by illustrated “Place01” or the like) of the POIindicated by the post corresponding to the spot post box 810 and votingbuttons 820 a, 820 b, 820 c, 820 d and 820 e (generically referred toalso as voting buttons 820, hereinafter) for voting for the post areindicated. In the present embodiment, the voting buttons 820 areso-called “like” buttons to be touched when giving affirmativeevaluation to the corresponding post.

In the case of being interested in the POI (that is, the place indicatedby Place01) indicated by the spot post box 810 a as a destination or aplace to stop by for the “spring drive”, for example, the user 130 cangive the affirmative evaluation to the posted POI by touching the votingbutton 820 a. The number of times of touching per joined user isarbitrary, and each joined user performs touching for a larger number oftimes as a degree of the affirmative evaluation that he/she has for thepost is greater.

An evaluation result as the entire joined users for the POI indicated bythe spot post box 810 a is displayed in the respective voting buttons820, as a number indicating the total number of times over the entireterminal devices 110 for the numbers of times that the voting buttons820 displayed respectively at the terminal devices 110 a, 110 b, 110 c,110 d, 110 e, 110 f, 110 g, 110 h and 110 i of the users 130 a, 130 b,130 c, 130 d, 130 e, 130 f, 130 g, 130 h and 130 i who are the joinedusers of the “spring drive” thread are pressed (touched), for example.For example, the number “44” displayed in the voting button 820 aindicates that the total number of times that the voting button 820 a ispressed as the affirmative evaluation is 44. Hereinafter, the totalnumber of times that the voting button 820 is pressed at the terminaldevices 110 of all the joined users is also referred to as a “votenumber” for the post corresponding to the voting button 820 (it is alsothe same for voting buttons 920 and 1120 to be described later).

In particular, in the information sharing system 100 of the presentembodiment, according to the vote number of the affirmative evaluationregarding the post to the “spring drive” thread, a display aspect of thethumbnail which is displayed at the terminal device 110 and indicatesthe post, a size of the thumbnail for example, is changed.

In FIG. 8, the size of the spot post box 810 a is set the largest anddisplayed such that the thumbnail indicating the post for “place01”which has acquired the largest vote number of 44 is displayed in thelargest size, in a descending order of the vote numbers displayed in thevoting buttons 820 a, 820 b, 820 c, 820 d and 820 e. In addition, thesize of the spot post box 810 d is set the smallest and displayed suchthat the thumbnail indicating the post for “Place04” which has acquiredthe smallest four votes is displayed in the smallest size.

Thus, since a distribution state of the affirmative evaluation of thejoined users among the posts can be intuitively recognized by the sizesof the thumbnails indicating the respective posts, each joined user caneasily recognize a preference trend as the entire joined users. Usingthese displays of the thumbnail, for example, the user 130 a who hascreated the “spring drive” thread can narrow down the posts regardingthe POI to the several posts of the high-order vote numbers, andrationally and quickly decide the destination of the spring drive withthe joined users or the like.

The user 130 can display the AV post screen as illustrated in FIG. 9 atthe terminal device 110, for example, by touching the category selectionbutton 802 indicated in the title display section 300 in the displayillustrated in FIG. 8. In FIG. 9, by emphatically displaying thecategory selection button 802 on which a musical note icon is drawn withthe high luminance compared to the category selection buttons 800 and804 drawn with shadows, it is indicated that the screen is the AV postscreen.

In FIG. 9, the thumbnails indicating already posted three pieces ofmusic and two moving images are indicated at the lower part of the titledisplay section 300. Specifically, in AV post boxes 910 a, 910 c and 910d indicating the posts for three musical pieces “Song01”, “Song02” and“Song03” respectively, the thumbnails of illustrative images of therespective musical pieces are displayed. In addition, in AV post boxes910 b and 910 e indicating the posts for two moving images “Video01” and“Video02” respectively, the thumbnails of the illustrative images of therespective moving images are displayed. Hereinafter, the AV post boxes910 a, 910 b, 910 c, 910 d and 910 e are generically referred to also asAV post boxes 910. A line drawing indicating the thumbnail is not drawnin the AV post boxes 910 in FIG. 9 in order to simplify the diagram andfacilitate understanding, however, it should be understood that thethumbnail is displayed in each of the AV post boxes 910 as describedabove.

In each of the AV post boxes 910, a reproduction button 940 is alsoprovided. Each reproduction button 940 is used when reproducing themusic or the like of the post indicated by the corresponding AV post box910.

For example, by touching the reproduction button 940 of the AV post box910 c, the user 130 can make the terminal device 110 output the music“Song02” of the post indicated by the AV post box 910 c. After the user130 touches the reproduction button 940 of the AV post box 910 c andreproduction of Song02 is started, as illustrated in FIG. 10, anoperation button set 1000 for performing various reproduction operationsis displayed in the AV post box 910 c. The operation button set 1000 isconfigured by, in addition to the reproduction button 940, a returnbutton 1002 for turning back a present reproduction part by apredetermined period of time, a stop button 1004, a temporary stopbutton 1006, and a feed button 1008 for feeding the present reproductionpart forward by the predetermined period of time, for example.

The user 130 can post the music or the like to the “spring drive” threadby touching an addition button 930 at the screen lower part illustratedin FIG. 9.

The post of the music or the like may include, for example, accessinformation (for example, an address of a server or an URL of a site) toa storage location where data for reproduction of the music or the likeis stored, and the image of the thumbnail to be displayed in the AV postbox 910, according to the prior art. For example, the user 130 can postthe information of the musical piece searched by a music searchapplication such as Spotify® to the “spring drive” thread via thesharing function provided by the OS (operating system) or the like ofthe terminal device 110.

In the respective AV post boxes 910 created and displayed when the musicor the like is posted, the name (indicated by illustrated “Song01” orthe like and “Video01” or the like) of the music or the likecorresponding to the AV post box 910 and voting buttons 920 a, 920 b,920 c, 920 d and 920 e (generically referred to also as the votingbuttons 920, hereinafter) for voting for the post of the music or thelike are displayed. In the present embodiment, the voting buttons 920are the so-called “like” buttons to be touched when giving theaffirmative evaluation to the corresponding post, similarly to thevoting buttons 820 described above.

For example, the user 130 who is the joined user of the “spring drive”thread can give the affirmative evaluation to the post of the music orthe like indicated by the corresponding AV post box 910 by touching thevoting button 920 displayed at his/her terminal device 110. The numberof times of touching per joined user is arbitrary, and each joined userperforms touching for the larger number of times as the degree of theaffirmative evaluation that he/she has for the post is greater.

The evaluation result as the entire joined users for the music or thelike indicated by each AV post box 910 is displayed in the voting button920, as the total number of times (that is, the vote number) that thevoting button 920 of the AV post box 910 is pressed in the entireterminal devices 110 of the joined users.

Similarly to the post of the POI described above, also for the post ofthe music or the like, according to the vote number of the affirmativeevaluation from the joined users, the display aspect of the thumbnailwhich is displayed at the terminal device 110 to indicate the post ofthe music or the like, the size of the thumbnail for example, ischanged. In FIG. 9, the size of the AV post box 910 c is set the largestand displayed such that the thumbnail of the post of “Video02” which hasacquired the largest vote number is displayed in the largest size, inthe descending order of the vote numbers indicated in the voting buttons920.

Thus, the user 130 can intuitively recognize the distribution state ofthe affirmative evaluation of the joined users among the posts by thesizes of the thumbnails indicating the respective posts, and can easilyrecognize the preference trend as the entire joined users. For example,when going for a drive to any place indicated by the posted POIillustrated in FIG. 8, the user 130 can enjoy the spring drive byperforming reproduction in order from the music or the like of the postwith the large vote number.

Further, the user 130 can display the photograph post screen asillustrated in FIG. 11 at the terminal device 110, for example, bytouching the category selection button 804 indicated in the titledisplay section 300 in the display illustrated in FIG. 8-FIG. 10. InFIG. 11, by emphatically displaying the category selection button 804 onwhich a photograph icon is displayed with the high luminance compared tothe category selection buttons 800 and 802 drawn with shadows, it isindicated that the screen is the photograph post screen.

The posts regarding photographs displayed on the photograph post screencan include not only the photographs but also arbitrary still images andmoving images. For example, photographed video images (moving images)and scan images of a brochure acquired while traveling may be posted.Hereinafter, the photographs, the moving images and/or the other imagesposted on the photograph post screen are generically referred to also asthe photographs or the like.

In FIG. 11, the 11 thumbnails indicating the photographs or the likealready posted to the “spring drive” thread are indicated at the lowerpart of the title display section 300. Specifically, in photograph postboxes 1110 a, 1110 b, 1110 c, 1110 d, 1110 e, 1110 f, 1110 g, 1110 h,1110 i, 1110 j and 1110 k (generically referred to also as photographpost boxes 1110, hereinafter) indicating each of the 11 posts for thephotograph or the like, the thumbnail of the image of each photograph orthe like is displayed. A line drawing indicating the thumbnail is notdrawn in the photograph post boxes 1110 in FIG. 11 in order to simplifythe diagram and facilitate understanding, however, it should beunderstood that the thumbnail is displayed in each of the photographpost boxes 1110 as described above.

“Photo01”, “Video11” and “Image01” or the like indicated in thephotograph post boxes 1110 are the names of the photographs or the like.The names of the photographs or the like may be, for example, file namesof data files of image data or video data (also referred to as imagedata or the like, hereinafter) of the photographs or the like.

The photographs or the like may be posted at arbitrary timing after the“spring drive” thread is created. For example, each joined user of the“spring drive” thread may post the photographs or video photographedpreviously before going on a trip as the spring drive, or may post thephotographs or the video photographed while traveling while or aftertraveling.

By touching the photograph post box 1110 indicating the already postedphotograph or the like, the user 130 can display the posted photographor the like indicated by the photograph post box 1110 at the terminaldevice 110 (not illustrated). In addition, by touching an additionbutton 1130 at the screen lower part illustrated in FIG. 11, the user130 can post the photograph or the like to the “spring drive” thread.

The post of the photograph or the like may include, for example, theaccess information to the storage location where the image data or thelike of the photograph or the like is stored, according to the priorart. For example, the user 130 can post the photograph or the likephotographed using a camera function or a video recorder functionprovided in the terminal device 110 to the “spring drive” thread via thesharing function provided by the OS (operating system) or the like ofthe terminal device 110.

In the photograph post boxes 1110 created and displayed when thephotograph or the like is posted, voting buttons 1120 a, 1120 b, 1120 c,1120 d, 1120 e, 1120 f, 1120 g, 1120 h, 1120 i, 1120 j and 1120 k(generically referred to also as the voting buttons 1120, hereinafter)corresponding to the photograph post box 1110 for voting for the post ofthe photograph or the like are displayed. In the present embodiment, thevoting buttons 1120 are the so-called “like” buttons to be touched whengiving the affirmative evaluation to the corresponding post, similarlyto the voting buttons 820 and 920 described above.

For example, each user 130 who is the joined user of the “spring drive”thread can give the affirmative evaluation to the post of the photographor the like indicated by the corresponding photograph post box 1110 bytouching the voting button 1120 displayed at his/her terminal device110. The number of times of touching per joined user is arbitrary, andeach joined user performs touching for the larger number of times as thedegree of the affirmative evaluation that he/she has for the post isgreater.

The evaluation result as the entire joined users for each photograph orthe like indicated by the photograph post box 1110 is displayed in thevoting button 1120, as the total number of times (that is, the votenumber) that the voting button 1120 of the photograph post box 1110 ispressed in the entire terminal devices 110 of the joined users.

Similarly to the post of the POI and the post of the music or the likedescribed above, also for the post of the photograph or the like,according to the vote number of the affirmative evaluation from thejoined users, the display aspect of the thumbnail which is displayed atthe terminal device 110 to indicate the post of the photograph or thelike, the size of the thumbnail for example, is changed. In FIG. 11, thesize of the photograph post box 1110 d is set the largest and displayedsuch that the thumbnail of the post of “Photo03” which has acquired thelargest vote number is displayed in the largest size, in the descendingorder of the vote numbers indicated in the voting buttons 1120.

Thus, the user 130 can intuitively recognize the distribution state ofthe affirmative evaluation of the joined users among the posts of thephotograph or the like by the sizes of the thumbnails indicating therespective posts, and can easily recognize the preference trend as theentire joined users. For example, after coming back from a drive to anyplace indicated by the posted POI illustrated in FIG. 8, the user 130can remember the spring drive by performing the reproduction in orderfrom the photograph or the like of the post with the high affirmativeevaluation.

In the information sharing system 100, further, the content included inthe post of the thread, the music or the like for example, can besynchronously reproduced among the joined users of the thread. Forexample, the user 130 can join the synchronous reproduction by touchinga synchronous reproduction button 932 displayed at the screen lowerpart, when the AV post screen like FIG. 9 or FIG. 10 is displayed athis/her terminal device 110. Hereinafter, the user who has joined thesynchronous reproduction is referred to as a synchronous joined user.

After joining the synchronous reproduction, the user 130 can perform thesynchronous reproduction for the music or the like posted to the threadamong the synchronous joined users (that is, together with the otherusers 130 who are the joined users and have joined the synchronousreproduction by a similar operation).

The music or the like can be synchronously reproduced by the informationmanagement server 102 simultaneously transmitting the information of acontent reproduction operation (simply referred to also as areproduction operation, hereinafter) acquired in the terminal device 110of an arbitrary user 130 who is the synchronous joined user to theterminal devices 110 of all the users 130 who are the synchronous joinedusers, for example. Here, the reproduction operation is, for example, anoperation performed by the user 130 using the reproduction button 940 orthe operation button set 1000 (also referred to as the reproductionbutton 940 or the like, hereinafter) illustrated in FIG. 9 or FIG. 10,and may include an operation of instructing start and stop of thereproduction of the content (that is, the music or the like) of the postindicated by any AV post box 910, at least.

Specifically, for example, when the user 130 touches the synchronousreproduction button 932 on the AV post screen like FIG. 9, the terminaldevice 110 transmits a joining request regarding the synchronousreproduction for the content of the post regarding the “spring drive”thread to the information management server 102. The joining requestincludes the user identification information of the user 130 who is thetransmission source of the joining request and the thread name of thethread that the user 130 wants to join, “spring drive” for example.

When the joining request is received, the information management server102 adds the user identification information of the user 130 who is thetransmission source of the joining request to the synchronous joineduser list preserved in the thread storage area of the thread. Whentransmitting a synchronous reproduction instruction (to be describedlater) to the terminal device 110 of the synchronous joined user, theinformation management server 102 refers to the preserved synchronousjoined user list, and specifies the user 130 to transmit the synchronousreproduction instruction. The access information to the terminal device110 of the specified user 130 is acquired from the user registrationinformation stored in the information management server 102.

By touching the synchronous reproduction button 932, the terminal device110 shifts to a synchronous reproduction mode operation. In asynchronous reproduction mode, the terminal device 110 sendsreproduction operation information regarding the content reproductionoperation acquired from the reproduction button 940 or the like to theinformation management server 102. When the reproduction operationinformation is received, the information management server 102 transmitsthe synchronous reproduction instruction to the terminal devices 110 ofall the synchronous joined users based on the reproduction operationinformation. When the synchronous reproduction instruction is receivedfrom the information management server 102, the terminal device 110executes the operation (the start and stop of the reproduction, forexample) corresponding to the reproduction operation indicated by thesynchronous reproduction instruction.

The reproduction operation information includes the user identificationinformation of the user 130, post identification information of the postwhich is a synchronous reproduction object, information of a presentreproduction part of the content of the post, and the content(reproduction start, stop and temporary stop or the like, for example)of the reproduction operation. In addition, the synchronous reproductioninstruction includes the post identification information of the postwhich is the synchronous reproduction object, the information of thepresent reproduction part of the content of the post, and the content(the reproduction start, stop and temporary stop or the like, forexample) of the reproduction operation to be executed in the terminaldevices 110. The information of the present reproduction part is thetime needed to reach the present reproduction part when the content isreproduced from the beginning at a normal speed, for example.

By touching the synchronous reproduction button 932, the terminal device110 displays a joining mode setting screen as illustrated in FIG. 12. InFIG. 12, under the title display section 300, three mode setting buttons1200, 1202 and 1204 where “Use as driver in vehicle”, “Use as passengerin vehicle” and “Use outside vehicle” are displayed respectively and ajoining end button 1206 for ending the synchronous reproduction mode areprovided.

The mode setting button 1200 is for setting when the user 130 utilizes avehicle as a driver. Here, the vehicle is the vehicle loaded with aspeaker or a display device capable of outputting the reproduced musicor the like, and is a passenger vehicle for example. When the user 130touches the mode setting button 1200, the terminal device 110 isoperated in a driver mode. In the driver mode, the terminal device 110establishes communication via short-range wireless communication ofBluetooth® or the like with an on-vehicle device of the vehicle so as tooutput the synchronously reproduced music or the like from the speakeror the display device of the vehicle through an AV controller which isthe on-vehicle device, for example. In this case, since thecommunication between the terminal device 110 and the on-vehicle deviceof the vehicle is established, for example, the content reproductionoperation can be performed by a steering switch (a switch provided on asteering wheel) of the vehicle instead of the reproduction button 940 orthe like.

The mode setting button 1202 is for setting used when the user 130utilizes the vehicle not as a driver but as a passenger. When the user130 touches the mode setting button 1202, the terminal device 110 isoperated in a passenger mode. In the passenger mode, the terminal device110 sets an output operation from the speaker provided in the terminaldevice 110 to a mute state (output inhibition state).

Thus, in the case where the plurality of terminal devices 110 whichperform the synchronous reproduction are present in the same vehicle forexample, the content (the music or the like) synchronously reproducedfrom the plurality of terminal devices 110 can be prevented from beingredundantly outputted. The user 130 who selects the passenger mode canshare content reproduction output outputted through an on-vehiclespeaker from the terminal device 110 of the other synchronous joineduser operated in the driver mode with the other persons in the vehicle,for example, while participating in the synchronous reproductionoperation by operating the reproduction button 940 or the like ofhis/her terminal device 110.

The mode setting button 1204 is for setting used when the user 130 doesnot utilize the vehicle. When the user 130 touches the mode settingbutton 1204, the terminal device 110 is operated in a vehicle outsidemode. In the vehicle outside mode, the terminal device 110 outputs thesynchronously reproduced music or the like from the speaker provided inthe terminal device 110.

On the joining mode setting screen illustrated in FIG. 12, the user 130can end joining the synchronous reproduction by touching the joining endbutton 1206 when wanting to stop joining the synchronous reproduction.When the joining end button 1206 is touched, the terminal device 110transmits a joining end request to the information management server102. The joining end request includes the user identificationinformation of the user 130 who is a transmitter of the joining endrequest, and the thread identification information indicating the threadwhich is the object of the synchronous reproduction.

The information management server receives the joining end request, anddeletes the user identification information of the user 130 who is thetransmitter of the joining end request from the synchronous joined userlist preserved in the thread storage area of the thread indicated by thejoining end request.

When the user 130 touches one of the mode setting buttons 1200, 1202 and1204, at the terminal device 110, a synchronous reproduction screen asillustrated in FIG. 13 is displayed, for example. The screen illustratedin FIG. 13 is similar to the AV post screen illustrated in FIG. 9, butit is indicated that it is the synchronous reproduction screen bydisplaying a background color of the AV post box 910 or the like in acolor different from the background color on the AV post screenillustrated in FIG. 9. In addition, the synchronous reproduction screenillustrated in FIG. 13 is different from the AV post screen illustratedin FIG. 9 at a point that the joining end button 1206 similar to FIG. 12is provided instead of the synchronous reproduction button 932.

On the synchronous reproduction screen in FIG. 13, by touching one ofthe reproduction buttons 940, the user 130 can reproduce the music orthe like of the post indicated by the corresponding AV post box 910. Forexample, when the user 130 touches the reproduction button 940 of the AVpost box 910 c, the synchronous reproduction of the music of Song02 isstarted, and the operation button set 1000 similar to FIG. 10 isdisplayed in the AV post box 910 c as illustrated in FIG. 14.

By operating each button configuring the operation button set 1000, theuser 130 can operate the reproduction operation of Song02 for which thesynchronous reproduction is started. For example, when the user 130touches the temporary stop button 1006, the reproduction of Song02 beingsynchronously reproduced in the terminal devices 110 of all thesynchronous joined users is temporarily stopped. In addition, forexample, when the user 130 touches the feed button 1008, the presentreproduction part of Song02 being synchronously reproduced in theterminal devices 110 of all the synchronous joined users is movedforward by the same predetermined time.

Note that, even when another user 130 newly becomes the synchronousjoined user in the case where one user 130 has already become thesynchronous joined user and is synchronously reproducing some content,the image illustrated in FIG. 14 can be displayed by a direct shift fromthe joining mode setting screen illustrated in FIG. 12 at the terminaldevice 110 of that another user 130.

FIG. 2 is a diagram illustrating an example of a scene where the musicor the like posted to the thread is synchronously reproduced. In thescene illustrated in FIG. 2, some joined users of the “spring drive”thread determine some places as the place to stop by and the destinationfrom the POIs of the respective posts displayed by the spot post boxes810 in FIG. 8, and go for a drive. For example, the users 130 a and 130b go for a drive in a vehicle 200 a, the users 130 c, 130 d and 130 e gofor a drive in a vehicle 200 b, and the user 130 f goes for a drive on abike 204. The users 130 g, 130 h and 130 i who are the other joinedusers do not join the drive, and are doing housework in a house 206,moving on a train 208 and moving on a bike 210 respectively.

For example, the user 130 c first touches the synchronous reproductionbutton 932 on the AV post screen illustrated in FIG. 9 displayed athis/her terminal device 110 c, and becomes the first synchronous joineduser. The user 130 c is the driver of the vehicle 200 b, and selects thedriver mode by touching the mode setting button 1200 where “Use asdriver in vehicle” is displayed on the joining mode setting screenillustrated in FIG. 12. Thus, the terminal device 110 c of the user 130c is connected with the AV controller of the vehicle 200 b by Bluetoothfor example, and an output destination of the music or the likesynchronously reproduced in the terminal device 110 c becomes AV outputequipment such as the speaker and/or the display device loaded on thevehicle 200 b.

After touching the mode setting button 1200, the synchronousreproduction screen as illustrated in FIG. 13 and FIG. 14 is displayedat the terminal device 110 c, and the user 130 c starts the reproductionof the favorite music or the like by the reproduction button 940 or thelike on the synchronous reproduction screen and watches and listens tothe reproduced music or the like from the speaker and/or the display ofthe vehicle 200 b.

After the user 130 c becomes the synchronous joined user, for example,the user 130 e sitting in a back seat of the vehicle 200 b becomes thesecond synchronous joined user by touching the synchronous reproductionbutton 932 on the AV post screen illustrated in FIG. 9 at his/herterminal device 110 e. The user 130 e is the passenger of the vehicle200 b, and selects the passenger mode by touching the mode settingbutton 1202 where “Use as passenger in vehicle” is displayed on thejoining mode setting screen illustrated in FIG. 12.

Thus, the terminal device 110 e of the user 130 e sets the speakerprovided in the terminal device 110 e to the mute state. The user 130 ecan watch and listen to the music or the like that the terminal device110 c of the user 130 c is already outputting from the on-vehiclespeaker and/or display device of the vehicle 200 b together with theuser 130 c inside a vehicle compartment of the vehicle 200 b. In thiscase, when the music or the like is the moving image, the user 130 e canalso watch the video image of the moving image at his/her terminaldevice 110 e while listening to the sound of the moving image from thespeaker of the vehicle 200 b.

In addition, at the terminal device 110 e of the user 130 e, thesynchronous reproduction screen as illustrated in FIG. 14 is displayedafter the mode setting button 1202 is touched. The user 130 e cantemporarily stop the music or the like being reproduced at present orthe like or newly start the synchronous reproduction of the music or thelike of the other post by operating the reproduction button 940 or thelike displayed at his/her terminal device 110 e.

The user 130 a who is the driver of the vehicle 200 a and the user 130 fwho is the driver of the bike 204 can also become the synchronous joinedusers in the driver mode by their terminal devices 110 a and 110 frespectively, similarly to the user 130 c described above. In addition,the user 130 b who is the passenger of the vehicle 200 a and the user130 d who is the remaining passenger of the vehicle 200 b can become thesynchronous joined users in the passenger mode by their terminal devices110 b and 110 d respectively, similarly to the user 130 e describedabove. Hereinafter, the vehicles 200 a and 200 b are genericallyreferred to also as vehicles 200.

Here, the users 130 a and 130 f who newly become the synchronous joinedusers in the driver mode can watch and listen to the music or the likealready being reproduced at the terminal device 110 c of the user 130 cfrom the part being reproduced at present by the terminal devices 110 aand 110 f.

Further, the user 130 g who is another joined user becomes thesynchronous joined user by touching the synchronous reproduction button932 at his/her terminal device 110 g in the house 206, and selects thevehicle outside mode by touching the mode setting button 1204 where “Useoutside vehicle” is displayed on the joining mode setting screenillustrated in FIG. 12. The terminal device 110 g synchronouslyreproduces the same music or the like together with the terminal devices110 of the other synchronous joined users, and the music or the like iswatched and listened to from the speaker and/or the display deviceprovided in the terminal device 110 g.

On the other hand, the joined users who do not want the synchronousreproduction operation, the users 130 h and 130 i for example, can watchand listen to the music or the like at their terminal devices 110 h and110 i independent of the terminal devices 110 of the other users 130 bypressing the reproduction button 940 of the AV post box 910 of the postof the favorite music or the like without touching the synchronousreproduction button 932 on his/her terminal devices 110 h and 110 i,respectively.

In the information sharing system 100 having the above-describedconfiguration, among the terminal devices 110 of the users 130 who havebecome the synchronous joined users by touching the synchronousreproduction button 932 among the joined users of the thread, thecontent of the music or the like for which an arbitrary synchronousjoined user has performed the reproduction operation using his/herterminal device 110 is synchronously reproduced. Thus, in theinformation sharing system 100, since the content of the posted music orthe like can be synchronously watched and listened to among the userswho have traveled together for example, sharing of an experience among aplurality of users related to the content reproduction can be promotedand oneness of the shared experience can be improved.

Hereinafter, the configurations of the information management server 102and the terminal device 110 configuring the information sharing system100 will be described.

First, the configuration of the information management server 102 willbe described. FIG. 15 is a diagram illustrating an example of theconfiguration of the information management server 102. The informationmanagement server 102 includes a processor 1500, a storage device 1502,and a communication device 1504. The storage device 1502 is configuredby a volatile semiconductor memory and a nonvolatile semiconductormemory and/or a hard disk device (memory) for example, and includes userregistration information 1506 and a thread storage area 1508. Inaddition, the storage device 1502 preserves other data and/or a programrequired for the operation of the processor 1500.

For the user registration information 1506, user information of eachuser 130 registered beforehand as a user of the information sharingsystem 100 is preserved. The user information includes the useridentification information such as a user ID for identifying each user130, and the access information and the mail address for communicatingwith the terminal device 110 of the user 130. In addition, the threadstorage area 1508 is the storage area secured for each thread as an areato store the posts or the like to the created thread every time a threadgeneration unit 1510 to be described later receives the thread creationrequest from the terminal device 110 and creates the thread.

The communication device 1504 is a transmitter-receiver (circuit) whichperforms cable communication and/or wireless communication forconnecting the processor 1500 and the terminal device 110 of the user130 communicably via the communication network 104.

The processor 1500 is a computer including a processor such as a CPU(Central Processing Unit), for example. The processor 1500 may beconfigured to include a ROM (Read Only Memory) where the program iswritten and a RAM (Random Access Memory) for temporary storage of thedata or the like. Then, the processor 1500 includes the threadgeneration unit 1510, a post reception unit 1512, a post informationtransmission unit 1514, a vote reception unit 1516, a joining requestreception unit 1518, a reproduction operation reception unit 1520, and acontent reproduction unit 1522, as functional elements or functionalunits.

The functional elements included in the processor 1500 are achieved bythe processor 1500 which is the computer executing the program, forexample. Note that the computer program can be stored in an arbitrarycomputer-readable storage medium. Instead, all or part of the functionalelements included in the processor 1500 may be configured by hardwareincluding one or more electronic circuit components respectively.

The thread generation unit 1510 generates the thread which is a virtualstorage space to preserve the posts from users belonging to each usergroup, for each user group. Specifically, every time the thread creationrequest is received from the terminal device 110 of any user 130, thethread generation unit 1510 generates a new thread by newly securing thethread storage area 1508 of a predetermined size in the storage device1502.

As described above, the thread creation request includes the threadname, the representative image, and the mail addresses of the selectedinvited users. The thread generation unit 1510 stores the threadinformation, the joined user list, the invited user information and thesynchronous joined user list of the created thread in the thread storagearea 1508 of the thread as the thread attribute information. Asdescribed above, the thread information includes the thread name and therepresentative image of the thread. In addition, the joined user listincludes the user identification information of the creator of thethread. Further, the invited user information includes the useridentification information of each invited user. Here, the threadgeneration unit 1510 can acquire the user identification information ofthe thread creator and the invited users by referring to the userregistration information based on the access information of the terminaldevice 110 of the transmission source and the mail addresses of theinvited users attached to the thread creation request. The synchronousjoined user list is an empty list as default.

After generating the thread, the thread generation unit 1510 transmitsthe joined thread information for the user 130 who has transmitted thethread creation request to the terminal device 110 which is thetransmission source of the thread creation request, and also transmitsthe invitation mail to the terminal device 110 of each invited user.

The joined thread information includes the thread names and therepresentative images of all the threads that the user 130 has joined.The thread generation unit 1510 refers to the joined user list preservedin the thread attribute information in all the thread storage areas1508, specifies the thread attribute information in which the joineduser list including the user identification information of the user 130is preserved, and generates the joined thread information based on thethread information preserved in the specified thread attributeinformation. Also, when transmission of the joined thread information isrequested from the terminal device 110 of any user 130, the threadgeneration unit 1510 transmits the joined thread information of the user130 to the terminal device 110.

Further, when the joining response to the invitation mail is receivedfrom the terminal device 110 of the user 130 who is the invited user,the thread generation unit 1510 refers to the thread attributeinformation in the thread storage area 1508 of the corresponding thread,and moves the user identification information of the user 130 who is thetransmission source of the joining response in the invited userinformation preserved in the thread attribute information to the joineduser list preserved in the same thread attribute information.

Further, when the declining response to the invitation mail is receivedfrom the terminal device 110 of the user 130 who is the invited user,the thread generation unit 1510 refers to the thread attributeinformation in the thread storage area 1508 of the corresponding thread,and deletes the user identification information of the user 130 who isthe transmission source of the declining response in the invited userinformation preserved in the thread attribute information.

According to the above, the thread generation unit 1510 generates thethread to preserve the posts from the joined users belonging to eachuser group, for each user group of the joined users configured by theuser 130 who has created the thread and the users 130 that are theinvited users who have accepted the invitation.

The post reception unit 1512 receives the post to the thread that theuser 130 has joined from the terminal device 110 of the user 130 via thecommunication device 1504, and stores the post in the thread storagearea 1508 of the thread secured in the storage device 1502.Specifically, the post reception unit 1512 receives post informationwhich is the post to the thread from the terminal device 110 of the user130. The post information includes the user identification informationof the user 130, the thread name of the thread which is a postingobject, post category information, and post content information. Thepost category information is the information indicating the category ofthe post such as the spot, the AV and the photograph, for example. Inaddition, the post content information includes the above-described POIinformation, the access information to the data for the reproduction ofthe music or the like, or the access information to the image data orthe like of the photograph or the like, for example.

Every time the post information is received, the post reception unit1512 generates a unique post identification ID, and also specifies thethread storage area 1508 of the corresponding thread from the threadname included in the post information. In addition, the post receptionunit 1512 generates one post record configured by the post contentinformation, the user identification information and the post categoryinformation included in the received post information, the vote number(an initial value is zero) acquired by the post, and the postidentification information indicating the generated post identificationID. Then, the post reception unit 1512 preserves the generated postrecord in the specified thread storage area 1508.

The post information transmission unit 1514 receives a post list requestfrom the terminal device 110 of the user 130. The post list requestincludes the user identification information of the user 130 who is thetransmitter and the specifying of the thread name. As the post listrequest is received from the terminal device 110 of the user 130, thepost information transmission unit 1514 refers to the joined user listpreserved in the thread storage area 1508 of the thread corresponding tothe thread name included in the post list request, and confirms that theuser 130 who is the transmitter is the joined user of the thread.

When the user 130 who is the transmitter is the joined user of thethread, the post information transmission unit 1514 refers to all thepost records preserved in the thread storage area 1508 of the thread,creates the post list information for the thread, and transmits the postlist information to the terminal device 110 of the user 130. The postlist information includes the post identification information of all theposts posted to the thread, and the post content information, the postcategory information and the acquired vote number of each post. Thus,the posts preserved in the thread storage area 1508 of the thread aredisplayed only at the terminal device 110 of the user 130 belonging tothe user group of the joined users of the thread. The display of theposts is displayed as the thumbnails indicating the respective posts asdescribed with reference to FIG. 8, FIG. 9 and FIG. 11.

The vote reception unit 1516 receives a vote from the user 130 to eachpost to the thread. Specifically, the vote reception unit 1516 receivesvoting information from the terminal device 110 of the user 130. Thevoting information includes the specifying of the thread name and thepost identification information of the post which is a voting object.Then, the vote reception unit 1516 updates the vote number for the postby adding 1 to the vote number of the post record specified by the postidentification information among the post records stored in the threadstorage area 1508 specified by the thread name, based on the receivedvoting information.

The joining request reception unit 1518 receives the joining requestregarding the synchronous output for the content of the post, from theterminal device 110 of the user 130. The joining request includes thespecifying of the thread name, and the user identification informationof the user 130 who is the transmission source of the joining request.As the joining request is received from the terminal device 110 of theuser 130, the joining request reception unit 1518 adds the useridentification information of the user 130 to the synchronous joineduser list preserved in the thread storage area 1508 of the threadspecified by the thread name. Thus, the user 130 who has transmitted thejoining request becomes the synchronous joined user.

In addition, when the user identification information of the user 130 isadded to the synchronous joined user list, the joining request receptionunit 1518 instructs the content reproduction unit 1522 to transmitsynchronous reproduction information to the terminal device 110 of theuser 130.

The reproduction operation reception unit 1520 receives the reproductionoperation information regarding the content reproduction from theterminal device 110 of the user 130 who is the synchronous joined user.The reproduction operation information includes the user identificationinformation of the user 130 who is the transmitter, the postidentification information of the post which is the synchronousreproduction object, the information of the present reproduction part ofthe content of the post, and the content (the reproduction start, stopand temporary stop or the like, for example) of the reproductionoperation.

The content reproduction unit 1522 synchronously outputs, based on thereproduction operation regarding the content in the terminal device 110of any user 130 from whom the joining request is received, the contentwhich is the object of the reproduction operation in the terminaldevices 110 of all the users 130 (that is, all the users 130 who are thesynchronous joined users) from whom the joining request is received.Here, the synchronous output is simultaneous reproduction and output ofthe same part of the identical content in all the terminal devices 110to be the target. In the present embodiment, the synchronously outputtedcontent is the music or the like, and the same melody part of theidentical musical piece is simultaneously reproduced and outputted inall the terminal devices 110 to be the target by synchronous output.

Specifically, when the reproduction operation reception unit 1520receives the reproduction operation information, the contentreproduction unit 1522 transmits the synchronous reproductioninstruction to the terminal devices 110 of all the users 130 who are thesynchronous joined users based on the reproduction operationinformation. The synchronous reproduction instruction includes the postidentification information of the post which is the synchronousreproduction object, the information of the present reproduction part ofthe content of the post, and the content (the reproduction start, stopand temporary stop or the like, for example) of the reproductionoperation to be executed in the terminal devices 110.

By the instruction from the joining request reception unit 1518, thecontent reproduction unit 1522 transmits the synchronous reproductioninformation to the terminal device 110 of the instructed user 130. Thesynchronous reproduction information includes the post identificationinformation of the post being synchronously reproduced at present, andthe information of the present reproduction part of the content of thepost.

Next, the configuration of the terminal device 110 configuring theinformation sharing system 100 will be described. FIG. 16 is a diagramillustrating an example of the configuration of the terminal device 110.The terminal device 110 includes a processor 1600, a storage device1602, a communication device 1604, a speaker 1610, the display device1612, and the touch panel 1614 provided on the display screen of thedisplay device 1612. The display device 1612 is a liquid crystal display(LCD), for example.

The storage device 1602 is configured by a volatile semiconductor memoryand a nonvolatile semiconductor memory and/or a hard disk device(memory) for example, and preserves the data and/or the program requiredfor the operation of the processor 1600.

The communication device 1604 includes a wide-area wireless device 1606and a short-range wireless device 1608. The short-range wireless device1608 is a wireless communication device (transmitter/receiver, circuit)which communicates with an on-vehicle short-range wireless device or thelike according to a Bluetooth communication standard, for example. Inaddition, the wide-area wireless device 1606 is a wireless communicationdevice (transmitter/receiver, circuit) for communicating with theinformation management server 102 and the other terminal devices 110,for example, via the communication network 104.

The processor 1600 is a computer including a processor such as a CPU,for example. The processor 1600 may be configured to include a ROM wherethe program is written and a RAM for the temporary storage of the dataor the like. Then, the processor 1600 includes a thread application unit1620, a post transmission unit 1622, a vote transmission unit 1624, adisplay control unit 1626, a joining request transmission unit 1628, ajoining mode acquisition unit 1630, and an output control unit 1632 asfunctional elements or functional units.

The functional elements included in the processor 1600 are achieved bythe processor 1600, which is the computer, executing the program(including the joining application described above), for example. Notethat the computer program can be stored in an arbitrarycomputer-readable storage medium. Instead, all or part of the functionalelements included in the processor 1600 may be configured by hardwareincluding one or more electronic circuit components respectively.

For example, in the operation described above with reference to FIG.3-FIG. 5, when the user 130 operates the text section 510 where“setting” is written in the title display section 300 illustrated inFIG. 5, the thread application unit 1620 transmits the thread creationrequest to the information management server 102. As described above,the thread creation request includes the thread name and therepresentative image inputted by the user 130 on the screen illustratedin FIG. 5 and the mail addresses of the invited users selected by theuser 130 on the screen illustrated in FIG. 4.

For example, when the user 130 performs posting to any thread by theoperation described with reference to FIG. 8, FIG. 9 and FIG. 11, thepost transmission unit 1622 transmits the post information indicatingthe post to the information management server 102. As described above,the post information includes the user identification information of theuser 130 who has performed the posting, the thread name of the threadwhich is the posting object, the post category information, and the postcontent information.

For example, when the user 130 votes for any post by the operationdescribed with reference to FIG. 8, FIG. 9 and FIG. 11, the votetransmission unit 1624 transmits the voting information for the vote tothe information management server 102. As described above, the votinginformation includes the specifying of the thread name and the postidentification information of the post which is the voting object.

The display control unit 1626 displays the screen illustrated in FIG.3-FIG. 13 at the display device 1612, according to the operation of theuser 130 using the touch panel 1614. When displaying the screenillustrated in FIG. 3-FIG. 14, the display control unit 1626 acquiresthe information to be needed from the information management server 102.For example, when displaying the thread list screen illustrated in FIG.3 and FIG. 6, the display control unit 1626 acquires the joined threadinformation from the information management server 102. In addition, forexample, when displaying the post screen in FIG. 8, FIG. 9 and FIG. 11,the display control unit 1626 transmits the post list request regardingthe corresponding thread to the information management server 102, andacquires the post list information.

In particular, the display control unit 1626 displays the thumbnailsindicating the respective posts at the display device 1612 on the postscreen illustrated in FIG. 8, FIG. 9 and FIG. 11. In addition, thedisplay control unit 1626 changes the display aspect of the thumbnailsaccording to the number of votes given by the voting buttons 820, 920 or1120 which are the so-called “like” buttons, for each thumbnailindicating the post based on voting result information received from theinformation management server 102. As illustrated in FIG. 8, FIG. 9 andFIG. 11, the change of the display aspect is the change of the size(more specifically, the display size at the display device 1612) of thethumbnail for example, in the present embodiment.

Regarding the thread for which the user 130 who is the owner of theterminal device 110 is the joined user, the joining request transmissionunit 1628 transmits the joining request regarding the synchronous outputof the content included in the post of the thread to the informationmanagement server 102. For example, when the user 130 operates thesynchronous reproduction button 932 by the operation described withreference to FIG. 9 in the above description, regarding the “springdrive” thread, the joining request transmission unit 1628 transmits thejoining request regarding the synchronous output of the music or thelike which is the content included in the post indicated by the AV postbox 910 illustrated in FIG. 9, to the information management server 102.As described above, the joining request includes the specifying of thethread name, and the user identification information of the user 130 whois the transmission source of the joining request. In addition, when thejoining request is transmitted to the information management server 102,the joining request transmission unit 1628 instructs a shift to thesynchronous reproduction mode to the output control unit 1632.

Further, when the joining end button 1206 is operated on the screenillustrated in FIG. 12-FIG. 14, the joining request transmission unit1628 transmits the joining end request to the information managementserver 102, and instructs the output control unit 1632 to end thesynchronous reproduction mode.

The joining mode acquisition unit 1630 acquires the specifying of thejoining mode which is the operation mode of the terminal device 110 inthe synchronous output of the content (that is, in the synchronousreproduction mode), from the user 130. Specifically, the joining modeacquisition unit 1630 acquires the specifying of the joining mode fromthe user 130 by detecting the operation for the mode setting buttons1200, 1202 and 1204 performed by the user 130 on the joining modesetting screen illustrated in FIG. 12.

In addition, when the specifying of the driver mode meaning joining thesynchronous output as the driver user who is the driver of the vehicle200 is acquired as the joining mode by detecting that the mode settingbutton 1200 is touched, the joining mode acquisition unit 1630establishes the communication between the terminal device 110 andon-vehicle equipment of the vehicle 200 by the short-range wirelessdevice 1608. Then, by instructing the operation in the driver mode tothe output control unit 1632, the joining mode acquisition unit 1630outputs the content of the post from the terminal device 110 to theon-vehicle equipment of the vehicle 200, an on-vehicle speaker 1714 (tobe described later) for example.

Further, when the specifying of the passenger mode meaning joining thesynchronous output as the passenger user who is the passenger of thevehicle 200 is acquired as the joining mode by detecting that the modesetting button 1202 is touched, the joining mode acquisition unit 1630instructs the operation in the passenger mode to the output control unit1632. Thus, the joining mode acquisition unit 1630 makes the outputcontrol unit 1632 set the output operation from the speaker 1610 to themute state, and inhibits the output of the content from the terminaldevice 110 at least for the sound.

Further, when the specifying of the vehicle outside mode is acquired asthe joining mode by detecting that the mode setting button 1204 istouched, the joining mode acquisition unit 1630 instructs the outputcontrol unit 1632 the operation in the vehicle outside mode.

According to the reproduction operation regarding the content of thepost given by the reproduction button 940 or the like illustrated inFIG. 9 or FIG. 10, the output control unit 1632 reproduces the contentof the post, and output the content using the speaker 1610 and/or thedisplay device 1612. Hereinafter, the operation is referred to as anormal operation mode.

In addition, when the shift to the synchronous reproduction mode isinstructed from the joining request transmission unit 1628, the outputcontrol unit 1632 starts the operation in the synchronous reproductionmode. In the synchronous reproduction mode, the output control unit 1632sends the reproduction operation information regarding the contentreproduction operation acquired from the reproduction button 940 or thelike to the information management server 102. Further, when thesynchronous reproduction information is received from the informationmanagement server 102, the output control unit 1632 reproduces thecontent of the post indicated by the synchronous reproductioninformation from the present reproduction part indicated by thesynchronous reproduction information. Also, when the synchronousreproduction instruction is received from the information managementserver 102, the output control unit 1632 executes the operation (thereproduction start and stop or the like, for example) corresponding tothe reproduction operation indicated by the synchronous reproductioninstruction.

In addition, when the operation in the driver mode is instructed fromthe joining mode acquisition unit 1630 in the synchronous reproductionmode, the output control unit 1632 outputs the reproduced content to theon-vehicle equipment of the vehicle 200, the on-vehicle speaker 1714 forexample, via the short-range wireless device 1608.

Further, when the operation in the passenger mode is instructed from thejoining mode acquisition unit 1630 in the synchronous reproduction mode,the output control unit 1632 sets the output operation from the speaker1610 to the mute state, and stops the output of the content from thespeaker 1610.

Also, when the operation in the vehicle outside mode is instructed fromthe joining mode acquisition unit 1630 in the synchronous reproductionmode, the output control unit 1632 outputs the reproduced content usingthe speaker 1610.

Further, when the end of the synchronous reproduction mode is instructedfrom the joining request transmission unit 1628, the output control unit1632 ends the operation in the synchronous reproduction mode, andreturns to the normal operation mode.

Next, the configuration of the vehicle 200 which reproduces the contentof the music or the like in cooperation with the terminal device 110configuring the information sharing system 100 will be described.

FIG. 17 is a diagram illustrating an example of the configuration of thevehicle 200. The vehicle 200 includes an AV (Audio Visual) controller1700 which is an on-vehicle electronic control unit (ECU, ElectronicControl Unit), and a TCU (Telematics Control Unit) 1702. In addition,the AV controller 1700 and the TCU 1702 are connected communicably witheach other via an on-vehicle network bus 1720. The on-vehicle networkbus 1720 is a CAN (Control Area Network) bus which performs thecommunication according to a CAN communication standard, for example.

The TCU 1702 includes a short-range wireless device 1706, a wide-areawireless device 1708, and a processor 1704 which controls the operationof the communication devices. The processor 1704 is a computer includinga processor such as a CPU, for example. The short-range wireless device1706 is a wireless communication device which communicates with theterminal device 110 according to the Bluetooth communication standard,for example. In addition, the wide-area wireless device 1708 is awireless communication device for communicating with the informationmanagement server 102 and other servers or the like which provide musicor distribute moving images, for example, via the communication network104.

The AV controller 1700 includes a processor (not illustrated) such as aCPU, controls the operation of a display device 1710 which is a liquidcrystal display for example and the speaker 1714 provided inside thecompartment of the vehicle 200, displays the images at the displaydevice 1710, and outputs the sound from the speaker 1714. In addition,the AV controller 1700 acquires input from a touch panel 1712 providedon the display screen of the display device 1710 and a steering switch1718 provided on the steering wheel of the vehicle 200.

In particular, the AV controller 1700 receives content reproductionoutput from the terminal device 110 via the short-range wireless device1706, and outputs the received content reproduction output to thedisplay device 1710 and/or the speaker 1714, for example.

Next, the operation of the information sharing system 100 will bedescribed with reference to flowcharts illustrated in FIG. 18 and FIG.19. FIG. 18 and FIG. 19 are the flowcharts illustrating procedures ofpost display processing and synchronous reproduction processing in theinformation sharing system 100, respectively.

First, the post display processing illustrated in FIG. 18 will bedescribed. The post display processing is the processing of receivingthe post from the user 130 to the thread and displaying the post at theterminal device 110.

The information management server 102 acquires the post and the votefrom the terminal device 110 as the post information and the votinginformation. The present processing is started when the informationmanagement server 102 receives some request, information or data fromone of the terminal devices 110.

In FIG. 18, when the processing is started, first, the post receptionunit 1512 of the information management server 102 determines whether ornot the post information is received (S100). Then, when the postinformation is received (S100, YES), the post reception unit 1512 storesa new post record in the thread storage area 1508 of the correspondingthread based on the received post information (S102), and ends thepresent processing.

On the other hand, when the post information is not received in stepS100 (S100, NO), the vote reception unit 1516 of the informationmanagement server 102 determines whether or not the voting informationis received (S104). Then, when the voting information is received (S104,YES), 1 is added to the vote number of the post record stored in thecorresponding thread storage area 1508 (S106), and the presentprocessing is ended.

On the other hand, when the voting information is not received in stepS104 (S104, NO), the post information transmission unit 1514 of theinformation management server 102 determines whether or not the postlist request is received from any terminal device 110 (S108). Then, whenthe post list request is received (S108, YES), the post informationtransmission unit 1514 transmits the post list information for thethread requested by the post list request to the terminal device 110which is the transmission source of the post list request (S110).

Next, the display control unit 1626 of the terminal device 110 whichreceives the post list information determines a thumbnail size accordingto the vote number for each post, for each post included in the postlist information (S112). Then, the display control unit 1626 displayseach post at the display device 1612 in the thumbnail format using thedetermined thumbnail size (S114), and ends the present processing. Here,the display of the post may be displayed at the display device 1612 foreach category of the post as described above with the reference to FIG.8, FIG. 9 and FIG. 11.

On the other hand, when the post list request is not received in stepS108 (S108, NO), the post information transmission unit 1514 ends thepresent processing.

Next, the synchronous reproduction processing illustrated in FIG. 19will be described. The synchronous reproduction processing is theprocessing of receiving the joining request from the terminal device110, creating the synchronous joined user list and synchronouslyreproducing the content in the terminal devices 110 of all thesynchronous joined users. The present processing is started when theinformation management server 102 receives some request, information ordata from one of the terminal devices 110.

In FIG. 19, when the processing is started, first, the joining requestreception unit 1518 of the information management server 102 of theinformation sharing system 100 determines whether or not the joiningrequest is received from the terminal device 110 of any user 130 (S200).Then, when the joining request is received (S200, YES), the joiningrequest reception unit 1518 preserves the user identificationinformation of the user 130 who has transmitted the joining request inthe synchronous joined user list stored in the thread storage area 1508of the corresponding thread based on the received joining request(S210). In addition, the joining request reception unit 1518 instructsthe content reproduction unit 1522 to transmit the synchronousreproduction information to the terminal device 110 of the user 130 whohas transmitted the joining request (S212) and returns the processing tostep S200. Here, the terminal device 110 which has transmitted thejoining request shifts to the synchronous reproduction mode, receivesthe synchronous reproduction information, and reproduces the contentbeing synchronously reproduced at present from the present reproductionpart.

When the joining request is not received in step S200 (S200, NO), thereproduction operation reception unit 1520 determines whether or not thereproduction operation information is received from the terminal device110 of any user 130 (S202). Then, when the reproduction operationinformation is received (S202, YES), the content reproduction unit 1522synchronizes the reproduction operation of the content of thecorresponding post in the terminal devices 110 of all the synchronousjoined users based on the received reproduction operation information(S214), and returns the processing to step S200. Specifically, asdescribed above, the content reproduction unit 1522 synchronizes thereproduction operation by transmitting the synchronous reproductioninstruction to the terminal devices 110 of all the synchronous joinedusers based on the received reproduction operation information.

On the other hand, when the reproduction operation information is notreceived in step S202 (S202, NO), the joining request reception unit1518 determines whether or not the joining end request is received fromthe terminal device 110 of any synchronous joined user (S204). Then,when the joining end request is received (S204, YES), the joiningrequest reception unit 1518 deletes the user identification informationof the joined user who has transmitted the joining end request from thesynchronous joined user list of the corresponding thread (S206).

Next, the joining request reception unit 1518 determines whether or notthe synchronous joined user list has become empty (that is, whether ornot there is no more synchronous joined user) (S208). Then, when thesynchronous joined user list has become empty (S208, YES), the joiningrequest reception unit 1518 ends the present processing.

On the other hand, when the joining end request is not received in stepS204 (S204, NO) and when the synchronous joined user list has not becomeempty in step S208 (S208, NO), the joining request reception unit 1518returns the processing to step S200.

Note that the present invention is not limited to the configuration ofthe above-described embodiment, and can be implemented in variousaspects without departing from the scope thereof.

For example, in the information sharing system 100 of the embodimentdescribed above, the content of the post to the thread is POIs, music,moving images, still images such as photographs and video images,however, the content of the post is not limited thereto. The content ofthe post may be arbitrary information that can be shared among theplurality of users. Such content may be information configured by textor site information of a shop or tourist spot guide or the like, forexample.

In addition, in the information sharing system 100, one voting button820, 920 or 1120 which gives the affirmative evaluation is displayed inthe post box indicating each post on the post screen illustrated in FIG.8, FIG. 9 and FIG. 11, however, the voting buttons are not limited tothe ones that give the affirmative evaluation equivalent to “likebuttons”. For example, each post box may be provided with a votingbutton that gives negative evaluation such as a so-called “dislikebutton” or may be provided with both of the voting button that gives theaffirmative evaluation and the voting button that gives the negativeevaluation.

In these cases, the display control unit 1626 of the terminal device 110can change the display aspect of the thumbnail indicating each voteaccording to the number of the votes and the content (whether it is theaffirmative evaluation or the negative evaluation) for each post. Inaddition, in the case where both of the voting button that gives theaffirmative evaluation and the voting button that gives the negativeevaluation are provided, the display control unit 1626 can change thedisplay aspect of the thumbnail of the post, based on a final evaluationnumerical value obtained by weight-subtracting the vote number by thevoting button that gives the negative evaluation from the vote number bythe voting button that gives the affirmative evaluation.

Further, in the information sharing system 100, the display aspect ofthe thumbnail to be changed according to the vote number is the size ofthe thumbnail, however, the display aspect to be changed is not limitedthereto. The display aspect of the thumbnail to be changed according tothe vote number may be an arbitrary aspect as long as a size relation ofthe affirmative or negative evaluation among the posts recognized byvoting can be visually recognized. For example, the display control unit1626 of the terminal device 110 may change the saturation, luminance,contour emphasis degree and/or contrast of the thumbnail according tothe number of the votes, instead of the size of the thumbnail.

In addition, in the information sharing system 100, the content of thepost to be synchronously reproduced is the music or the like, however,the content to be the object of the synchronous reproduction is notlimited to the music or the like. The content to be the object may bearbitrary content as long as it is the content that can be included inthe post and can be the object of the synchronous reproduction. Forexample, a plurality of posted photographs may be synchronouslyreproduced as slides, and the same photographs are displayed at thedisplay devices 1612 of the terminal devices 110 of all the synchronousjoined users.

Further, the content (the POI information, for example) of the postbrowsed at the display device 1612 of the terminal device 110 of onesynchronous joined user may be simultaneously displayed at the terminaldevices 110 of all the other synchronous joined users. Thus, thesynchronous joined users can simultaneously change the destination andthe place to stop by of the vehicles 200 a and 200 b, based on thesimultaneously displayed POI information during a drive in the vehicles200 a and 200 b, for example.

In addition, in the information sharing system 100, the driver mode, thepassenger mode and the vehicle outside mode are present in the relationwith the vehicle 200 as the joining mode in the synchronous reproductionmode, however, the joining mode is not limited thereto. The outputdestination of the content reproduction to external equipment is notlimited to the speaker 1714 and/or the display device 1710 loaded on thevehicle 200, and may be arbitrary external equipment connectable withthe terminal device 110 via short-range radio such as Bluetooth. Suchexternal equipment may be, for example, a Bluetooth speaker or atelevision connectable via the short-range radio. In this case, forexample, the driver mode, the passenger mode and the vehicle outsidemode may be defined as an “external equipment output mode” of performingreproduction output from the terminal device 110 to the externalequipment, a “mute mode” of setting a built-in speaker of the terminaldevice 110 to be mute, and a “built-in speaker mode” of using thespeaker 1610 provided in the terminal device 110, respectively.

Also, in the information sharing system 100, the output control unit1632 of the terminal device 110 transmits the information of thereproduction operation by the reproduction button 940 or the likedisplayed at the display device 1612 to the information managementserver 102 in the synchronous reproduction mode, however, acquisitionmeans of the reproduction operation performed by the user 130 is notlimited to the reproduction button 940 or the like. For example, theoutput control unit 1632 of the terminal device 110 may acquire thereproduction operation performed by the user 130 using the steeringswitch 1718 of the vehicle 200 via the short-range wireless device 1608when the joining mode is set to the driver mode in the synchronousreproduction mode.

Further, the information sharing system 100 described above isconfigured by the information management server 102 illustrated in FIG.15 and the plurality of terminal devices 110 illustrated in FIG. 16,however, the configuration of the information sharing system 100 is notlimited thereto. For example, the components of the informationmanagement server 102 may be distributed and achieved by a plurality ofservers connected via the communication network communicably to eachother. In addition, some functional elements included in the processor1500 of the information management server 102 may be achieved in theprocessor 1600 of the terminal device 110, or some functional elementsincluded in the processor 1600 of the terminal device 110 may beachieved in the processor 1500 of the information management server 102conversely.

As described above, the information sharing system 100 relating to theembodiment described above includes the post reception unit 1512configured to receive the post from the user; the display control unit1626 configured to display the thumbnail indicating the post at theterminal device 110 of the user 130 for each received post; and the votereception unit 1516 configured to receive the vote from the user 130 tothe post. Then, the display control unit 1626 changes the display aspectof the thumbnail according to the number of the votes received by thevote reception unit 1516 regarding the corresponding post, for eachthumbnail.

According to the configuration, while sharing the information of thepost from the user 130 among the plurality of users 130, the preferencetrend as the entire users 130 can be easily recognized.

In addition, in the information sharing system 100, the display controlunit 1626 changes the size of the thumbnail according to the number ofthe votes as the display aspect. According to the configuration, bycomparing the sizes of the thumbnails of the respective posts, thepreference trend as the entire users 130 can be visually and easilyrecognized.

Further, in the information sharing system 100, the content of the postincludes music, moving images, places or photographs. According to theconfiguration, the content such as the music, the moving images, theplaces or the photographs that are easily connected with an actionexperience of a travel or the like can be shared among the users 130.

Also, the information sharing system 100 includes the thread generationunit 1510 configured to generate the thread which is the virtual storagespace to preserve the post from the joined user belonging to the usergroup, for each user group of the joined users. Then, the post receptionunit 1512 receives the post to the thread from the user 130 andpreserves the post in the thread. In addition, the display control unit1626 displays the thumbnail of the post preserved in the thread only atthe terminal device 110 of the joined user belonging to the user groupcorresponding to the thread.

According to the configuration, the thread can be freely crated for eachspecific theme for example, and the post for each theme can be sharedamong the users 130.

Further, the information sharing system 100 includes the joining requestreception unit 1518 configured to receive the joining request regardingthe synchronous output of the content of the post from the user 130within the user group of the joined users, and the content reproductionunit 1522 configured to output the content of the post preserved in thethread to the terminal device 110 of the user 130 within the user group.Then, the content reproduction unit 1522 synchronously outputs, based onthe reproduction operation regarding the content in the terminal device110 of any user 130 from whom the joining request is received, thecontent which is the object of the reproduction operation, in theterminal devices 110 of all the users 130 from whom the joining requestis received.

According to the configuration, sharing of the experience among theplurality of users 130 can be promoted and the oneness of the sharedexperience can be improved.

Also, in the information sharing system 100, the terminal device 110 ofthe user 130 whose joining request is not received by the joiningrequest reception unit 1518 performs the reproduction operation of thecontent included in the post independent of the terminal devices 110 ofthe other users 130. According to the configuration, even the user 130who does not join the synchronous reproduction operation can freelyreproduce and enjoy the content of the post.

Further, the information sharing system 100 executes an informationsharing method. The information sharing method includes a step (S100)where the post reception unit 1512 receives the post from the user 130,a step (S114) where the display control unit 1626 displays the thumbnailindicating the post at the terminal device 110 of the user 130 for eachreceived post, and a step S104 where the vote reception unit 1516receives the vote from the user to the post. Then, the display aspect ofthe thumbnail is changed according to the number of the votes receivedby the vote reception unit 1516 regarding the corresponding post, foreach thumbnail, in the displaying step.

According to the configuration, while sharing the information of thepost from the user 130 among the plurality of users 130, the preferencetrend as the entire users 130 can be easily recognized.

100 . . . information sharing system, 102 . . . information managementserver, 104 . . . communication network, 110, 110 a, 110 b, 110 c, 110d, 110 e, 110 f, 110 g, 110 h, 110 i, 110 j, 110 k and 110 m . . .terminal device, 130, 130 a, 130 b, 130 c, 130 d, 130 e, 130 f, 130 g,130 h, 130 i, 130 j, 130 k and 130 m . . . user, 200, 200 a and 200 b .. . vehicle, 204, 210 . . . bike, 206 . . . house, 208 . . . train, 300. . . title display section, 302 . . . main display section, 306, 830,930 and 1130 . . . addition button, 310, 310 a and 310 b . . . threadbox, 400 . . . user invitation box, 402, 510, 702 and 704 . . . textsection, 500 . . . thread setting box, 502 . . . representative imagesection, 504 . . . thread name input section, 506 . . . invited userlist, 508 . . . software keyboard, 700 . . . invitation display box,800, 802 and 804 . . . category selection button, 810, 810 a, 810 b, 810c, 810 d and 810 e . . . spot post box, 820, 820 a, 820 b, 820 c, 820 d,820 e, 920, 920 a, 920 b, 920 c, 920 d, 920 e, 1120, 1120 a, 1120 b,1120 c, 1120 d, and 1120 e, 1120 f, 1120 g, 1120 h, 1120 i, 1120 j and1120 k voting button, 910, 910 a, 910 b, 910 c, 910 d and 910 e . . . AVpost box, 940 . . . reproduction button, 1000 . . . operation buttonset, 1002 . . . return button, 1004 . . . stop button, 1006 . . .temporary stop button, 1008 . . . feed button, 1110, 1110 a, 1110 b,1110 c, 1110 d, 1110 e, 1110 f, 1110 g, 1110 h, 1110 i, 1110 j and 1110k . . . photograph post box, 1200, 1202 and 1204 . . . mode settingbutton, 1206 . . . joining end button, 1500, 1600 and 1704 . . .processor, 1502 and 1602 . . . storage device, 1504 and 1604 . . .communication device, 1506 . . . user registration information, 1508 . .. thread storage area, 1510 . . . thread generation unit, 1512 . . .post reception unit, 1514 . . . post information transmission unit, 1516. . . vote reception unit, 1518 . . . joining request reception unit,1520 . . . reproduction operation reception unit, 1522 . . . contentreproduction unit, 1606 and 1708 . . . wide-area wireless device, 1608and 1706 . . . short-range wireless device, 1610 and 1714 . . . speaker,1612 and 1710 . . . display device, 1614 and 1712 . . . touch panel,1620 . . . thread application unit, 1622 . . . post transmission unit,1624 . . . vote transmission unit, 1626 . . . display control unit, 1628. . . joining request transmission unit, 1630 . . . joining modeacquisition unit, 1632 . . . output control unit, 1700 . . . AVcontroller, 1702 . . . TCU, 1716 . . . microphone, 1718 . . . steeringswitch.

What is claimed is:
 1. An information sharing system comprising: aninformation management server, and a plurality of terminal devices ofusers, wherein the information management server and the terminaldevices are communicatively connected via a communication network, theinformation management server comprises a processor, wherein theprocessor; receives a post from a user that is posted by a useroperation on the terminal device; displays a thumbnail indicating thepost at the terminal device of the user for each received post; receivesa vote, from the user to the post, that is voted by the user operationon the terminal device; changes a display aspect of the thumbnailaccording to a number of the votes received regarding the correspondingpost, for each thumbnail; generates a thread which is a virtual storagespace to preserve the post from the user belonging to a user group, foreach user group; receives the post to the thread from the user that isposted by the user operation on the terminal device and preserves thepost in the thread; and displays the thumbnail of the post preserved inthe thread only at the terminal device of the user belonging to the usergroup corresponding to the thread, wherein a content of the postincludes music or a movie, and wherein the processor; receives a joiningrequest regarding synchronous output of the content, that is the musicor the movie, of the post from the user, that is posted by the useroperation on the terminal device, within the user group for each thread;transmits the music or the movie preserved in the thread to the terminaldevice of all users from whom the joining request is received; based ona reproduction operation regarding the music or the movie in theterminal device of any user from whom the joining request is received,transmits a synchronous reproduction instruction including postidentification information for identifying the music or the movie whichis a synchronous reproduction object and information of a presentreproduction part of the music or the movie to the terminal device ofall users from whom the joining request is received; and synchronizesthe music or the movie which is the synchronous reproduction object andinstructs a start of reproduction from a common reproduction part in theterminal devices of all the users from whom the joining request isreceived.
 2. The information sharing system according to claim 1,wherein the processor changes a size of the thumbnail according to thenumber of the votes as the display aspect.
 3. The information sharingsystem according to claim 1, wherein the content of the post includesmusic, moving images, places or photographs.
 4. An information sharingmethod between an information management server, and a plurality ofterminal devices of users, wherein the information management server andthe terminal devices are communicatively connected via a communicationnetwork, wherein the method includes steps of receiving a post from auser that is posted by a user operation on the terminal device;displaying a thumbnail indicating the post at the terminal device of theuser for each received post; receiving a vote, from the user to thepost, that is voted by the user operation on the terminal device;changing a display aspect of the thumbnail according to a number of thevotes received regarding the corresponding post, for each thumbnail;generating a thread which is a virtual storage space to preserve thepost from the user belonging to a user group, for each user group;receiving the post to the thread from the user that is posted by theuser operation on the terminal device and preserves the post in thethread; and displaying the thumbnail of the post preserved in the threadonly at the terminal device of the user belonging to the user groupcorresponding to the thread, wherein a content of the post includesmusic or a movie, and wherein the method further includes steps of:receiving a joining request regarding synchronous output of the content,that is the music or the movie, of the post from the user, that isposted by the user operation on the terminal device, within the usergroup for each thread; transmitting the music or the movie preserved inthe thread to the terminal device of all users from whom the joiningrequest is received; based on a reproduction operation regarding themusic or the movie in the terminal device of any user from whom thejoining request is received, transmitting a synchronous reproductioninstruction including post identification information for identifyingthe music or the movie which is a synchronous reproduction object andinformation of a present reproduction part of the music or the movie tothe terminal device of all users from whom the joining request isreceived; and synchronizing the music or the movie which is thesynchronous reproduction object and instructing a start of reproductionfrom a common reproduction part in the terminal device of all the usersfrom whom the joining request is received.